【摘要】 不同的物理信道条件下,不同蓝牙分组传输会有不同的性能,因此需要根据链路状态选择适宜分组进行数据传输。基于最近分组传输历史记录,提出一个使得蓝牙异步无链接ACL通信链路上ARQ协议期望吞吐率最大来选择适宜分组进行数据传输的算法。仿真结果显示只需用很短的历史观察记录就可获得很好的算法性能。此外,在一个差错率高的环境中,适宜选择DM分组传输以保证数据的可靠传输,反之,则适宜选择DH分组传输以提高数据传输速率。更多还原

【Abstract】 Under different physical channel conditions,different Bluetooth packet for transmission has different performance.So,it is needed to choose suitable packet for data transfer according to link state.Based on the acknowledgement history of the most recently transmitted packets,an optimal algorithm was proposed to choose the suitable packet for transmission through maximizing the expected throughput efficiency of ARQ protocol on Bluetooth ACL data communication link.Simulation results show that this method works very well even with a short observation history.Furthermore,it is proper to take DM packets as data transmission in a high error rate environment to guarantee the reliable data transfer;otherwise it is suitable to take DH packets as data transmission to improve the data transfer rate.更多还原